Went to go for a drive today and my 2006 4.6L F150 wouldn't start. Cranks but acts like it's not getting any gas. Any ideas where to start looking? I've already made sure it's got plenty of gas in it. Not getting a check engine light, all lights appear normal.

 

I did a little research and 2 things came up, the fuel reset button and the duel pump module. From looking online the fuel pump reset is supposed to be by the fuse box near the passenger side kick panel, but I wasn't able to find it there. The fuel pump module corrodes, I'll have to check on that in the morning when it's daytime.

Then again the problem may not be fuel related at all, does spraying starting fluid into the intake still work like it did on the older trucks?

 

No spraying starting fluid is not good. You need to get a fuel presure reading and in those years the only way to do that is with a scan tool that can show it. They took off the fuel pressure gauge zerk. Look at the fuel pump drive modual loacated under the spare tire if it looks corroded replace it. Then if that dont work youll have to have it scanned..

 

start by checking your fuel pump driver module mounted on the cross member above the spare tire. with it being winter its probably full of snow and salt and badly corroded from years of said snow and salt. the fuel reset button is behind the right side kick panel near the fuse box but is hidden so you'll have to look for it. the only way for that switch to trip is a hard jolt like you were in a wreck.

 

Thanks for the info guys. Come to think of it, it was snowing the 2nd to last time I drove the truck. It was moved out of the driveway Friday and didn't start Yesterday. I'll be taking a REALLY close look at the FPDM. When the FPDM goes bad is the corrosion normally obvious? If not, is there a way to test it other than listening for the fuel pump running? I hate to spend $110 on a part and that not be the problem, electrical parts are non-returnable. $110 is local price with tax, I know I can get it cheaper online but don't want the truck to be down that long.

 

Found the reset switch and it wasn't tripped. Took some photos and a video of what is going on.

 

Here's a video of what is happening:

The module does have some corrosion, but it's not all the way through. Part of me says even if the module is not the problem right now, it will be one in the future and replace it anyways. The other part of me doesn't like swapping parts as a troubleshooting procedure.

 

Does the fuel pump cycle for a couple of seconds when you turn the key on? That module doesn't look all that good, but i don't want to tell you to spend $110 either.Fuel filter ever been changed? Crank sensors can also cause no start conditions.

 

Fuel filter changed a year ago, have put on 17,000 miles since then. I don't know if the noise in the video is a fuel pump or not, but something is squealing when ignition is turned on. I scraped on the bottom of the module, there are no holes in it. No cracks in the casing either.

 

It would be good if you could get the fuel pressure read,that way you would know if it is a fuel delivery problem or not. I could not tell if it was the fuel pump or not in the video, sure was high pitched. Take arubber mallet or something that won't damage the tank, and hit the bottom of the tank a few times, if it starts, replace the pump.
Plus this test doesn't cost anything.

 

That's what I thought, the fuel pumps I've heard have never been that high pitched. That's why I was wondering if it was the fuel pump. The noise is NOT present when the ignition is tried and the fuel pump drive module is unhooked. Is it possible that the fuel pump is locked up and that's why it's making the high pitched noise? From what I've read there is no schrader valve on the fuel line like the older trucks have, how do you confirm fuel pressure?

 

It has to be checked with a scan tool that can show it, as jethat posted above.

 

Looks like buying the scan tool is my next step. Will a scan tool such as work? If not a fuel system problem will it show why it's not starting? I'm more than happy to spend $25 if it really works. Do the "computer type" scanners really work as well as the $100 stand alone machines?

 

I would just replace that FPDM if it were me. Looks bad enough that if it aint a problem it will be soon. They fail on those years commonly..

 

have someone turn the key on while your at the fuel tank and see if that is where your noise is coming from. i've never heard a pump give off a high pitch squeal like that. if your fpdm isn't all the way through, it can probably be reused, but by the looks of it i would replace it to save a head ache down the road, i got mine from rockauto.com for about 65 bucks and had it in about 3 days. i also sprayed the aluminum housing with rubberized undercoating to help protect it, plus it came with rubber standoff's to get it off the cross member